DavecUK yes, it was the wrong way up in the picture I took, it was the right way up anytime it’s been in place. Thanks for informing the identity of the valves.
my question was then on to the very bottom piece/tube/barrel, is there any internal part in that? If yes, can that be removed?
L’autre problem - what’s your thoughts on the straight 10 bar shot? It’s discharging water to the drip tray excessively for the entire shot. Many thanks in advance